高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (2): 267.

• 论文 • 上一篇    下一篇

离子交换过程中的液膜扩散传质研究(Ⅰ)

常征1, 邱陵1, 林雪2, 何炳林2   

  1. 1. 兰州大学现代物理系, 730000;
    2. 南开大学高分子化学研究所
  • 收稿日期:1989-07-26 出版日期:1991-02-24 发布日期:1991-02-24
  • 通讯作者: 常征

Studies of Liquid Film Diffusion Mass Transfer in the Process of Ion Exchange (I)

Chang Zheng1, Qiu Ling1, Lin Xue2, He Bing-lin2   

  1. 1. Department of Modern Physics, Lanzhou University, Lanzhou, 730000;
    2. Research Institute of Polymer, Nankai University, Tianjin
  • Received:1989-07-26 Online:1991-02-24 Published:1991-02-24

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摘要： 研究了用大孔交联聚甲基丙烯酸酯吸附剂MET-802从不同浓度的盐酸中吸附AuCl4-的液膜扩散传质问题.结果表明,传质系数Kt与介质的运动粘度v的7.4次方成正比,且液膜厚度σ远大于树脂半径,与Carberry的理论式不符;并提出了可普遍适用的表达K1和σ的经验式.

关键词: 液膜厚度, 液膜扩散, 大孔吸附树脂

Abstract: The liquid film diffusion mass transfer of adsorption of AuCl4- from hydrochloric acid with various concentrations through the film encompassing macroporous crosslinked polymethacrylate resin MET-802 was studied. The results, deviated from the theoretical formula proposed by James J. Car-berry, show that the mass transfer coefficient Kf is in proportion to v7.4(v is kinematic viscosity) and the thickness of the film a is much larger than the diameter of the resin. The above results are discussed and two general empirical equations for expressing Kfand σ are suggested.

Key words: Liquid film thickness, Liquid film diffusion, Macroporous adsorption resin

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